Bus



FIG. 1 is a front view of a bus, showing my new design;

FIG. 2 is a back view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a left side perspective view thereof; and,

FIG. 6 is a right side perspective view thereof. 

CLAIM The ornamental design for a bus, as shown and described. 